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1.4
System memory
Overview
This motherboard comes with four Double Data Rate 4 (DDR4) Dual Inline Memory Module
(DIMM) sockets. The figure illustrates the location of the DDR4 DIMM sockets:
•
You may install varying memory sizes in Channel A and Channel B. The system
maps the total size of the lower-sized channel for the dual-channel configuration. Any
excess memory from the higher-sized channel is then mapped for single-channel
operation.
•
Always install DIMMs with the same CAS latency. For optimal compatibility, we
recommend that you install memory modules of the same version or date code (D/C)
from the same vendor. Check with the retailer to get the correct memory modules.
•
Due to Intel® chipset limitations, DDR4 2133MHz and higher memory modules on
XMP mode will run at the maximum transfer rate of DDR4 2133MHz.
•
According to Intel
the CPU.
•
Due to the memory address limitation on 32-bit Windows
or more memory on the motherboard, the actual usable memory for the OS can be
about 3GB or less. For effective use of memory, we recommend that you do any of the
following:
-
-
-
•
Memory modules with memory frequency higher than 2133 MHz and its corresponding
timing or the loaded X.M.P. Profile is not the JEDEC memory standard. The stability
and compatibility of these memory modules depend on the CPU's capabilities and
other installed devices.
•
The default memory operation frequency is dependent on its Serial Presence Detect
(SPD), which is the standard way of accessing information from a memory module.
Under the default state, some memory modules for overclocking may operate at a
lower frequency than the vendor-marked value.
•
For system stability, use a more efficient memory cooling system to support a full
memory load (4 DIMMs).
•
Refer to www.asus.com for the latest Memory QVL (Qualified Vendors List)
ASUS E3-PRO V5
DIMM_A1
DIMM_A2
DIMM_B1
DIMM_B2
CPU spec, DIMM voltage below 1.35V is recommended to protect
®
Use a maximum of 3GB system memory if you are using a 32-bit Windows
I nstall a 64-bit Windows
®
motherboard.
F or more details, refer to the Microsoft
com/kb/929605/en-us.
Channel
Channel A
DIMM_A1 & DIMM_A2
Channel B
DIMM_B1 & DIMM_B2
OS if you want to install 4GB or more on the
support site at http://support.microsoft.
®
Sockets
OS, when you install 4GB
®
®
OS.
1-11
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